iswblank():
_XOPEN_SOURCE >= 600 || _ISOC99_SOURCE; or
cc -std=c99
DESCRIPTION
The
iswblank()
function is the wide-character equivalent of the
isblank(3)
function.
It tests whether wc is a wide character
belonging to the wide-character class "blank".
The wide-character class "blank" is a subclass of the wide-character class
"space".
Being a subclass of the wide-character class "space",
the wide-character class "blank" is disjoint from the
wide-character class "graph" and therefore also disjoint
from its subclasses "alnum", "alpha", "upper", "lower", "digit",
"xdigit", "punct".
The wide-character class "blank" always contains
at least the space character
and the control character aq\taq.
RETURN VALUE
The
iswblank()
function returns non-zero
if wc is a wide character
belonging to the wide-character class "blank".
Otherwise it returns zero.
CONFORMING TO
POSIX.1-2001.
NOTES
The behavior of
iswblank()
depends on the
LC_CTYPE
category of the
current locale.
This page is part of release 3.14 of the Linux
man-pages
project.
A description of the project,
and information about reporting bugs,
can be found at
http://www.kernel.org/doc/man-pages/.
